The expanded menu contains the same features as the toolbar itself, with the following extra items.
Isolate
Hides the entire model and displays only the selected objects. When isolated, you can zoom in and out, rotate, or pan.
Models
Displays a list of available models. Select the model to review.
Settings
Provides various settings to control the display and provide system information. Use the Information and Diagnostics settings to troubleshoot display problems.